Problem Statement

Takahashi is making a computer baseball game.
He will write a program that shows a batter's batting average with a specified number of digits.

There are integers $A$ and $B$, which satisfy $1 \\leq A \\leq 10$ and $0 \\leq B \\leq A$.
Let $S$ be the string obtained as follows.

• Round off $\\dfrac{B}{A}$ to three decimal digits, then write the integer part ($1$ digit), . (the decimal point), and the decimal part ($3$ digits) in this order, with trailing zeros.

For example, if $A=7$ and $B=4$, then $\\dfrac{B}{A} = \\dfrac{4}{7} = 0.571428\\dots$ rounded off to three decimal digits is $0.571$. Thus, $S$ is 0.571.

You are given $A$ and $B$ as the input and asked to print $S$.

Constraints

• $1 \\leq A \\leq 10$
• $0 \\leq B \\leq A$
• $A$ and $B$ are integers.

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Input

The input is given from Standard Input in the following format:

$A$ $B$

Output

Print $S$ in the format specified in the Problem Statement. Note that answers in different formats will be considered wrong.

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Sample Input 1

7 4

Sample Output 1

0.571

As explained in the Problem Statement, $\\dfrac{B}{A} = \\dfrac{4}{7} = 0.571428\\dots$ rounded off to three decimal digits is $0.571$. Thus, $S$ is 0.571.

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Sample Input 2

7 3

Sample Output 2

0.429

$\\dfrac{B}{A} = \\dfrac{3}{7} = 0.428571\\dots$ rounded off to three decimal digits is $0.429$. (Note that it got rounded up.)
Thus, $S$ is 0.429.

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Sample Input 3

2 1

Sample Output 3

0.500

$\\dfrac{B}{A} = \\dfrac{1}{2} = 0.5$ rounded off to three decimal digits is again $0.5$.
Thus, $S$ is 0.500. Note that it must have three decimal places.

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Sample Input 4

10 10

Sample Output 4

1.000

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Sample Input 5

1 0

Sample Output 5

0.000